It is wise to check Belavia cancellation policy beforehand. Belavia airlines gives you the option to cancel the flight reservation online. Besides, you can request cancellation over the phone.You need to cancel the flight up to 2 hours before the flight departure. Belavia 24 Hour Cancellation Policy allows us to get a full refund if we cancel the flight before 24 hours of booking. To get into details of eligibility, refund and cancellation, please refer to the above given link.